报告题目：Luminescent Fluoride Nanoparticles Activated by Rare Earth Ions

主讲人：Hiroko Kominami

主持人：兰州大学材料与能源学院  王育华  教授

时间：2024年9月24日（周二）上午9:30-10:30

地点：格致楼4022

        报告摘要：Photodynamic therapy can be roughly divided into the type of phosphor excitation: X-ray or IR laser. Based on this definition, two types of phosphors can be selected: downconversion and up-conversion, respectively. Thus, cerium activators and bivalent europium for X-ray photodynamic therapy, and an erbium-ytterbium pair for IR photodynamic therapy were chosen. The phosphor matrix was chosen primarily for the possibility of synthesizing nanosized particles and their non-toxicity. The lecture developed with the preparation of phosphor: down conversion (YF₃:Ce, LaF₃:Ce, YF₃:Eu) and up conversion (YF₃:Yb,Er), discussed the time of hydrothermal treatment and the type of phosphor substrate; Type of activator; Activator concentration; The oxidation degree of the activator; Synthetic environment; Dispersant type; Effects of molecular weight of dispersant and other factors on the properties of nanophosphor.

        个人简介：Hiroko Kominami is Regular a Member of the Japanese Society of Applied Physics, a Board member of the International Association of Display Seminarsandwon the Young Researcher Award. Received Ph.D. in Electronics and Material Science, Faculty of Engineering from Shizuoka University in 1999. The development and performance improvement of medical X-ray excited nanophosphors and ultraviolet emission phosphors have been studied deeply. Hiroko Kominami is currently an Associate Professor at Shizuoka University，previously served JSPS as a PhD Researcher.